Improvement in machines fo



i 3 Sheets-Sheet 1.

I. N. PORRESTER.

Machine for Beveling and Truing Wire. v No. 222,483. Patented Dec. 9, 1879.

3 Sheets-*Sheet 2. I. N. PORRESTER. Machine for .Beveling and Truing Wire. No. 222,483. Patented thee. 9, I879.

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E eR I! QL ig N PETERS. PHOTO-LITHOGRAPHBL WASHINGTON, D c

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I. N. FORRESTER.

Machine for Bevelingand Truing Wire. No. 222,483. Patented Dec. 9,1879.

UNITED STATES PATENT OFFICE.

ISAAG N LFORRESTER, 0F PHILADELPHIA,PA., AS-SIGNOR- TO THOMAS CUN- NINGHAM, HORATI O' B. LINCOLN, GEORGE BROWN, LUGIAN BROWN, FRANK P. PENDLETON, AND JOSIAH K. PROCTOR, OF SAME PLACE.

IMPROVEMENT IN MACHIiNliS' F0.R=j BEVIELING A'ND' TRUlNG WIRES.

Specification forming part of Letters Patent No. 22%,483, dated December 9, 1879; application filed October 16,1879.

I To all whom mag concern."

Bei't. known that I, IsnAoNFoRREsrER, of

Philadelphia, Pennsylvania, have invented a newand useful Improvement in Machines for Beveling and Timing Wires, of which the following is a specification. I

My invention relates to; mechanism for beveling flattened wires and reducing them to a Y sharpedge, so that, after being toothed, they can be used in the construction of toothed cylinders and rolls; and the main object of my invention is to combine a knifewith be'veling rolls, so; that, as the wire is traversed by the action of these rolls, the said knife shall shave so much from the edge of the said wire that the rolls will be enabled to reduce it to. the desired sharp edge, and at the sametime make w it of uniform width.

Further objects of my invention are to combine flattening-rolls, a shaving-knife, and bevcling-rolls in one machine,.and to regulate the relative speed of the two sets of rolls.

In the accompanying drawings, Figures 1 and 2, Sheet 1, are exaggerated sections of the wire as it appears before andafterit has been subjected, to the operation described hereinafter; Fig. 3, a view of the wire after it has been toothed Fig.4, a sideiview of part of the machine Fig. 5, a View of parts of the bevelingrolls; Figs. 6 and7, enlarged sectional views of the shaving device; Figs. 8

Y and 9, Sheet 2, views drawn to a reduced scale, @and representing the machine without the r driving mechanism; and. Fig. 10,. Sheet 3, a

be sharp, the other edge being of the same, or

about the same, thickness as. the original flat wire. Teeth are out in the thin edge of the beveled wire, as shown in Fig. 3, and the toothed wire is made part of a cylinder or. roll by introducing the thickedge into a spiral groove out into the roll, and finally pressing the metal between the coils of wire, so that it may hug the beveled sides of the same.

The main feature of myinvention, however, is restricted to the reduction of the flattened wire, Fig. 1, to the condition shown in Fig. 2 preparatory to the cutting of the teeth inthe strip.

It is importantthat the toothed strip, Fig. 3, should be of unvarying width, that the teeth should be sharp, and, consequently, that the wire, Fig. 2, should have a sharp edge, and

should be uniform in width.

In Sheet 1,. A represents part of the base of the machine, and to this base is secured a frame, B, to a projection, a, on which is fitted a steel guide, I), for the wire, Fig. 1, the guide being so adapted to. the said projection that while it can be adjusted laterally therein by a set-screw, d, it? can move neither longitudinally nor vertically.

A knife, D, preferably of the sectional form, (best observed in Fig. 6,) bears at its thickest portion against the projection to of the frame, and below against the side of a slot in the said frame, (see Fig. 7,) and is confined to its place by a block, 6, and set-screws f f, the latter passing through a lug, h, on the frame.

The flattened wire, Fig. 1, is drawn through the slot of the guide-block b by the action of rolls referred to hereinafter, and one edge of the wire is shaved by the knife, the amount shaved off being dependent upon the adjustment of the guide-block by the screw 01. At

a suitable distance from this shaving mechanism two housings or standards, W W, are secured to the base A, and in these housings the rolls 0 C have their bearin gs. These rolls are caused to turn in the direction of the arrows, and the roll 0 has a beveling groove, as shown in Fig. 5, so as to reduce the flattened and shaved wire to the condition shown in Fig. 2.

In order that the finished wire may be of uniform width, and be reduced to a sharp edge, it is essential that there should be exactitude in the preliminary shaving operation, for the removal of too, much metal from the flattened wire would result in a beveled wire with a blunt edge, and to remove too little from the flat wire would result in a beveled wire with an edge terminating in a ragged fin; hence the adjustability of the guiding'block b by the set-screw d or the knife itself may be made adjustable.

I prefer to embody the combination of the shaving and rolling devices described above in the machine shown in Figs. 8 and 9, Sheet 2, in which a pair of plain rolls, G G, carried by suitable housings, are so situated that a round wire can be reduced to a flat condition, Fig. 1, before it reaches the knife 1); but this flattening operation may be conducted in a separate machine. There is also in Figs. 8 and San additional shaving-knife, I), mounted on a frame and combined with a guidingblock in the manner described above. The object of this second knife is to shave ofl'such small fins as may occur at intervals, owing to occasional imperfections in the original round wire.

H II are two guide-rollers for directing the finished wire to a reel.

When the flattening-rolls G G and beveling-rolls C (1 are combined in one machine it is essential that they should rotate in such unison with each other and at such relative speed that the wire between two pairs of rolls shall have a proper degree of tension. Too great a speed of the rolls (J U in respect to that of the rolls G G would result in tearing the wire apart, and too slow a speed would result in such a slackness of the wire between the two pairs of rollers that the proper shaving of the edge could not be effected.

The round wire subjected to the first pair of rolls often varies slightly in thickness, and this variation demands such an adjustment of the upper roll, G, as will result in the reduction of the wire to the proper shape for the bevelingrolls, and a similar adjustment of the upper beveling-roll may also be required. Either of these adjustments may cause an undue tension or slackening of the wire between the two pairs of rolls; hence the importance of mechanism for so changing the relative speed of the two pairs of rolls as to counteract either of these evils. The perspective view in Sheet 3 shows the two pairs of rolls and appliances for this purpose.

The rolls G and G are coupled to shafts M M, which are geared together, and the lower shaft is driven by suitable gearing from a shaft, N, on which is the driving-pulley P. In like manner the rolls G G are driven from a shaft, N, on which is a driving-pulley, P.

In hangers m, secured to the beams of the floor above the machine, or to any suitable frame, two shafts, It It, have their bearings, the shaft B being driven from any shaft which derives its motion from the engine. This shaft It carries a cone-pulley, T, a belt, or, from which passes round a similar pulley, T, on the shaft R, the two cone-pulleys being arranged in the reverse order shown.

The pulley P is driven from a pulley on the shaft R, and the pulley P from a pulley on the shaft R.

In hangers p 11, secured to the rafters be tween the two shafts It R, a screw-shaft, V, has its bearings, and overa grooved pulley on this shaft passes an endless chain, u. The screw-shaft controls the position of a slide, to, on guide-rods 2; attached to the hangers p, and this slide carries two guides, y y, for the belt 00, one being near each cone-pulley, so that by operating the chain u the position of the belt w on the cone-pulleys may be changed, and consequently the relative speed of the two pairs of rolls altered as the circumstances above referred to may demand.

I claim as my invention- 1. The combination, in a machine for bevel- -ing flattened wire, of an adjustable shaving device with beveling-rolls G C, substantially as described.

2. The combination of the flattening-rolls G G. the knife D, and beveling-rolls C C, as set forth.

3. The combination of the bevcling-rolls G G with the knife D, as specified.

4. The combination of the flattening-rolls G G, the shaft It, having a cone-pulley, T, the beveling-rolls U U, the shaft R, having a conepulley, T, the belt 00, passing round both concpulleys, and devices, substantially as described, for changing the position of the belt, as set forth.

In testimony whereof Ihave signed my name to this specification in the presence oftwo subscribing witnesses.

I. N. FORRESTER.

Witnesses:

ALEXANDER PATTERSON, HARRY SMITH. 

